442888319 has 8 divisors (see below), whose sum is σ = 458940720. Its totient is φ = 426888000.

The previous prime is 442888217. The next prime is 442888321. The reversal of 442888319 is 913888244.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442888319 is a prime.

It is a super-2 number, since 2×442888319² = 392300126213291522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442888339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4724 + ... + 30134.

It is an arithmetic number, because the mean of its divisors is an integer number (57367590).

Almost surely, 2^442888319 is an apocalyptic number.

442888319 is a deficient number, since it is larger than the sum of its proper divisors (16052401).

442888319 is a wasteful number, since it uses less digits than its factorization.

442888319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26041.

The product of its digits is 442368, while the sum is 47.

The square root of 442888319 is about 21044.9119503979. The cubic root of 442888319 is about 762.2511273791.

The spelling of 442888319 in words is "four hundred forty-two million, eight hundred eighty-eight thousand, three hundred nineteen".